Improvement in machines for gumming saws



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w Machines for Gu-mming Saws. 146,392.

Patehtd Jan. '13 1-8 74.

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UNITED STATES PATENT ()FFIGE.

THOMAS S. JACKSOII, OF LA GRANGE, TEXAS.

IMPROVEMENT IN MACHINES FOR GUMMING SAWS.

Specification forming part of Letters Patent No. 146,392, dated January 13, 1674; application filed November 8, 1873.

To all whom it may concern:

Be it known that I, THOMAS S. J AoKsomof La Grange, in the county of Fayette and State of Texas, have invented a new and useful Improvem ent in Machine for Gummin g and Dressing Saws, of which the following is a specification:

The object of this invention is to provide convenient and efficient means for gumming and dressing saws without files, designed more especially for circular saws of saw-mills, but applicable to all circular as well as to vertical mill saws; and it consists in an adjustable machine whereby an emeryavheel is made to operate on the saw in the most eflicient manner.

In the accompanying drawings, Figure 1 represents an elevation of the machine as when at work, the drawing being partly in section. Fig. 2 is a horizontal section of Fig. 1, taken on the line as w.

Similar letters of reference indicate corresponding parts.

A is the bed-plate, by means of which the machine is fastened to the saw'frame. B is a slotted stand or socket, which is adjustably connected withthe bed-plate by a screw-bolt, U. D is the slot. This stand resembles the tool-socket of a turning-lathe, and it is made adjustable in a similar manner. F is an arm which extends horizontally at a right angle from the shank G, which latter is placed in the socket-stand, as seen in the drawing. To one side of this arm F is attached, on the hori- The machine may be operated by handor y by other motive power, and is made to gum' or dress the teeth of a saw without the use of files, and in the most expeditious manner.

The saw may be jointed to a true circle by setting it so that the shortest tooth" will just touch the emery-wheel when the latter is running, and then, slowly revolving the saw, all

intervening and longer teeth will be out and shortened, and the edge of the saw will be brought to a true circle, after which the saw is gummed and the teeth dressed as usual.

Having thus described my invention, Iclaini as new, and desire to secure by Letters Patent- The adjustable standard B and adjustable arm F, in combination with the arbor K and emery-wheel J, as and for the purposes described.

THOMAS S. JACKSON.

Witnesses:

S. D. BARDIN, J NO. W. JACKSON. 

